Master Flash Roof Vent Seal for 12 inch OD Roof Vents. Base is 24x24 with 11-3/4 Square Opening. Fits over 12-inch OD Roof vent pipe. Grey or Black EPDM with aluminum seal ring. Price/Each.
Designed to easily seal 12" size rotating ventilators on metal roof tops. Installs over the top of vent pipe.
Resilient Design Master Flash performance is unaffected by:
ユ Ice/snow
ユ Hail stones
ユ Vibration
ユ Expansion/Contraction
Environment Co